/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef SKY_ENGINE_PLATFORM_TRANSFORMS_IDENTITYTRANSFORMOPERATION_H_
#define SKY_ENGINE_PLATFORM_TRANSFORMS_IDENTITYTRANSFORMOPERATION_H_

#include "flutter/sky/engine/platform/transforms/TransformOperation.h"

namespace blink {

class PLATFORM_EXPORT IdentityTransformOperation : public TransformOperation {
 public:
  static PassRefPtr<IdentityTransformOperation> create() {
    return adoptRef(new IdentityTransformOperation());
  }

  virtual bool canBlendWith(const TransformOperation& other) const {
    return isSameType(other);
  }

 private:
  virtual bool isIdentity() const override final { return true; }
  virtual OperationType type() const override { return Identity; }

  virtual bool operator==(const TransformOperation& o) const override {
    return isSameType(o);
  }

  virtual void apply(TransformationMatrix&, const FloatSize&) const override {}

  virtual PassRefPtr<TransformOperation> blend(const TransformOperation*,
                                               double,
                                               bool = false) override {
    return this;
  }

  IdentityTransformOperation() {}
};

}  // namespace blink

#endif  // SKY_ENGINE_PLATFORM_TRANSFORMS_IDENTITYTRANSFORMOPERATION_H_
